I guess you can say Sony screwed up in designing the NEX 3/5, but they never hinted an evf was possible.

If the rest stays the same N5 is going to be no different than C3 or last year’s 5/3 with new sensor. So the only advantage it’s going to have is support for EVF. Even if the hardware is different from 3/5 as you say it probably won’t be that much different from C3, yet it too won’t support EVF.

One thought that I have on my mind right now. If it uses new accessory port then I wonder if it means that old accessories won’t work, if it uses the same accessory port than sony missed a chance of making their customers happy.

And to answer your question. How is Sony screwing me?
I invest in system when it’s released, buy accessories, buy new lenses and hope that when some new and interesting accessories will come I’ll be able to buy and use them. But instead they release almost twin camera to the one I bought only year ago but this one will support EVF and mine won’t. That’s how you screw customers. And as someone already said, they could have said at the beginning that there won’t be EVF for nex5/3 cause it can’t handle it.
I wouldn’t complain if NEX was old system, already few years on the market with old cameras that really could not meet the performance requirements and were radically different from new cameras, but after a year hardware is too weak to handle mirroring of the screen?!

End of my long comment. Hopefully the source was mistaken(as was the case with 16-50 lens being SAM and now we know it’s going to be SSM according to writings on the lens)